Distorted blender UV face unwraping
a little tip to use already found solutions. you can easily use as many versions of blender as you need. it doesn't need any installation. just download earlier version in another folder and run it from there. this way you can use solutions for previous versions, save your file and then continue in your favorite one later.
it's not so weird as it sounds, at least for blender. it can do some things better in the very version only.